GB9608812D0 - One-chip CPU - Google Patents

One-chip CPU

Info

Publication number
GB9608812D0
GB9608812D0 GBGB9608812.5A GB9608812A GB9608812D0 GB 9608812 D0 GB9608812 D0 GB 9608812D0 GB 9608812 A GB9608812 A GB 9608812A GB 9608812 D0 GB9608812 D0 GB 9608812D0
Authority
GB
United Kingdom
Prior art keywords
chip cpu
cpu
chip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GBGB9608812.5A
Other versions
GB2300499A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of GB9608812D0 publication Critical patent/GB9608812D0/en
Publication of GB2300499A publication Critical patent/GB2300499A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1416—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights
    • G06F12/1425—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block
    • G06F12/1433—Protection against unauthorised use of memory or access to memory by checking the object accessibility, e.g. type of access defined by the memory independently of subject rights the protection being physical, e.g. cell, word, block for a module or a part of a module

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)
  • Microcomputers (AREA)
GB9608812A 1995-05-01 1996-04-30 One-chip CPU with memory protection Withdrawn GB2300499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7107540A JPH08305635A (en) 1995-05-01 1995-05-01 One-chip cpu

Publications (2)

Publication Number Publication Date
GB9608812D0 true GB9608812D0 (en) 1996-07-03
GB2300499A GB2300499A (en) 1996-11-06

Family

ID=14461786

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9608812A Withdrawn GB2300499A (en) 1995-05-01 1996-04-30 One-chip CPU with memory protection

Country Status (4)

Country Link
US (1) US5860123A (en)
JP (1) JPH08305635A (en)
AU (1) AU709041B2 (en)
GB (1) GB2300499A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3588529B2 (en) * 1997-01-28 2004-11-10 株式会社東芝 Semiconductor device and its application system device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184201A (en) * 1978-04-26 1980-01-15 Sperry Rand Corporation Integrating processor element
US4521852A (en) * 1982-06-30 1985-06-04 Texas Instruments Incorporated Data processing device formed on a single semiconductor substrate having secure memory
JPS6068441A (en) * 1983-09-22 1985-04-19 Fujitsu Ltd 1-chip microcomputer
US5134700A (en) * 1987-09-18 1992-07-28 General Instrument Corporation Microcomputer with internal ram security during external program mode
US4843026A (en) * 1987-09-24 1989-06-27 Intel Corporation Architecture modification for improved ROM security
US5361341A (en) * 1987-10-02 1994-11-01 Sgs-Thomson Microelectronics, S.A. Device for enabling the use of the contents of memory areas of an electronic microprocessor system
JPH01219982A (en) * 1988-02-29 1989-09-01 Hitachi Maxell Ltd Ic card
JPH01232452A (en) * 1988-03-14 1989-09-18 Nec Corp One-chip processor
JP2682700B2 (en) * 1989-05-09 1997-11-26 三菱電機株式会社 IC card
US5251304A (en) * 1990-09-28 1993-10-05 Motorola, Inc. Integrated circuit microcontroller with on-chip memory and external bus interface and programmable mechanism for securing the contents of on-chip memory
DE69231077T2 (en) * 1991-03-06 2001-02-01 Nec Corp Single-chip microcomputer with protective function for the content of an internal ROM
DE4115152C2 (en) * 1991-05-08 2003-04-24 Gao Ges Automation Org Card-shaped data carrier with a data-protecting microprocessor circuit
WO1993010498A1 (en) * 1991-11-12 1993-05-27 Microchip Technology Inc. Security for on-chip microcontroller memory
JPH05266225A (en) * 1992-03-16 1993-10-15 Mitsubishi Electric Corp Microcomputer
FR2694120B1 (en) * 1992-07-24 1994-09-23 Sgs Thomson Microelectronics Memory word management circuit.
JP3520102B2 (en) * 1993-12-28 2004-04-19 株式会社東芝 Microcomputer
US5557743A (en) * 1994-04-05 1996-09-17 Motorola, Inc. Protection circuit for a microprocessor

Also Published As

Publication number Publication date
JPH08305635A (en) 1996-11-22
AU709041B2 (en) 1999-08-19
AU5197196A (en) 1996-11-14
GB2300499A (en) 1996-11-06
US5860123A (en) 1999-01-12

Similar Documents

Publication Publication Date Title
DE69628407D1 (en) Pedometer
PL324453A1 (en) Sold greasea
GB9508637D0 (en) New use
DE69637797D1 (en) Ten)phenylazoresorcinolen
GB9608812D0 (en) One-chip CPU
AP9600802A0 (en) Libricant
ZA963484B (en) New use
EP0772129A3 (en) Computer
GB9526387D0 (en) Storycard
GB9518180D0 (en) Kneeler
GB9519915D0 (en) Use
GB9519905D0 (en) Use
GB9520119D0 (en) Use
GB9505071D0 (en) Use
GB9520121D0 (en) Use
FR2736804B1 (en) STRAPS
CA77296S (en) Sold state planar snesor
GB2305869B (en) Amusment devices
AU1105P (en) DALESE Metrosideros excelsus
GB9502519D0 (en) Gels
GB9502529D0 (en) Gels
GB9512125D0 (en) Gels
PL103582U1 (en) Overall
HU9500014D0 (en) Reversed stirling-motor
GB9518676D0 (en) Cycles

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)